FTH collectors are available with different types of absorbers in the sizes 1.825 to 2.3 sqm net area, offering a very good ratio between gross and net area. The installation of the panels can be done in many ways: on-roof, in-roof, flat-roof and facade mounting (also 90 degrees). The collector frame consists of a single curved, extruded aluminum profile. A sea-water-proof aluminum alloy was selected as frame material for high stability.